Seam cutter



Sept. 16, 1930. sc T 1,776,046

SEAM CUTTER Filed April 20, 29 2 Sheets-Sheet l EbW/NTGcHM/pT attowwq Sept. 16, 1930. E. T. SCHMIDT SEAM CUTTER Filed April 20, 1929 2 Sheets-Sheet 2 VA a a A a a MD; M/ A 1 f 3 .0 up a E a flux h a 2 w w m L 5 J w isEsgwig gmmto p .50 w//v 260M107 Patented Sept. 16, 1930 PATENT OFFICE EDWIN T. SCHMIDT, LANCASTER, PENNSYLVANIA SEAM CUTTER Application filed April 20,

This invention relates to a seam cutter particularly adapted for use in cutting seams in linoleum and other material wherein it is dificult. to obtain evenly cut edges.

An object of this invention is to provide a seam cutter adapted to travel over the surface of material to be cut and provided with a cutting member which may be adjusted vertically .to cut substantially any thickness of material.

Another object is to provide a device of thetypexreferred to wherein the cutter is provided with rollers to enable it to more easily travel over the surface of material to be cut.-

A further object is to provide means carried by the cutter to enable pressure to be exerted downwardly on the surface of the material in substantiall the same plane with the cutting member, lioth forwardly and .rearwardly of the latter.

A further object is to provide means carried by the cutter for guiding the latter in.

its movement over the surface of material 7 7; to'be cut, the guidemeans serving to space In; holder adapted to carry a knife blade in a vertical position and to providemeans for assisting the knife. holder to maintain the knife blade in vertical position.

A further object is to provide a knife holder with a partially tapered vertical slot and inwardly directed shoulders projecting into said slot, the knife blade being arranged in the slot and being held therein by the resiliency of-the holder adjacent the slot, and

by means of a nut threaded on the holder.

Other objects and advantages of this invention will become apparent during the course of the following description.

In the drawings'I have shown one embodiment ofmy invention. In this showing:

1929. Serial No. 356,838.

Figure 1 is a plan view,

Figure 2 is a side elevation,

Figure 3 is a front elevation,

Figure 4 is a sectional view taken substantially on line ll ofFigure 3, parts being shown in elevation,

Figure 5 is a perspective view of the knife holding member, and,

Figure 6 is a fragmentary sectional view showing the knife blade in position in the holder.

Referring to the drawings the numeral 10 indicates a frame member asa whole, provided with spaced parallel sides 11 joined together by cross members 12 and 13.- Ad

jacent the front of the frame upright arms 14 are preferably formed integral with the frame and these arms are connected by a relatively wide cross member 15, preferably formed integral with the arms. The member 15 is provided with a somewhat thickened portion 15 and this portion is provided with a substantially rectangular shaped opening 16 for a purpose to be described. Adjacent the forward and rear end of the frame shafts 17 extend through openings therein and are journaled in bearings 18 preferably formed integral with the frame. A plurality of rollers 19 and 20 are arranged on these shafts and may be secured in place by cotter pins or the like 21. The rollers 19 and 20 are preferably formed of hard rubber or other suitable material and the rear rollers 20 are knurled substantially as shown at 22 for a purpose to be described. As clearly shown in Figure 1, one of the side members 11 has extensions 22 adjacent the forward and rear' extremity thereof, extending inwardly for a short distance, and guide lugs 23 preferably formed integral with the extensions 22 are arranged parallel with the side arms 11. The front lug 23 has a pin 24: arranged there in, this pin serving to rotatably carry a pressure roller 25. A rear pressure roller 25 is similarly carried by the rear lug 23. V Intermediate the guide lugs 23, a third guide lug 23 is carried by the side member 11.

The numeral 26 indicates an externally threaded knife holding member provided with flattened portions 27 adjacent one ex- I i are tapered. The fiattenedportions 27 of theg tremity thereof and provided J with asuibstantially axial vertical slot 28 adjacent the opposite extremity. 1 Invvardly extending shoulders 29 are arranged on the member '26 adjacent its loWer extremity and these shoiil ders project slightly into the slot 28 fora a v purpose to a be. described. As 'sliovvn in Figure 5, the vertical sides of the'slot 28 above the shoulders 29 are preferably parallel with the flattened portions 27 of the member "26] While the sides of the slot belo'vv'th'e shonlders' I holder fit within the opening 16 in the cross frame member l an dupperl andlowenrihts -30 and 31' respectively are threaded on the V member 26 tofretain this member in position- The numeral 38 indicates v Vprovidedivvith a substantially flat upperedge fili-arid provided with a downwardly turned enttingpoint'35r I The knife blade is" carried in thefslot: 28f andasclearlyrshown in-Fignre 6, the blade tapers downwardlyKas at136j to=- more easily fit withintlie tapered portion of theslot28; fi atbot-toinefd nnt 37 isthread- -'ed on thefholder 26 and may be moved to a position engaging the fiat-edge 34 of the knife blade whereby the knife I secured in the holder-5 As shown in; Figures and l the cross frame member 12 is provid-l ed' with a forwardly extending vertical por-i jtion es, 'havingf'therein a "substantiallyV- Suitable handle "niembers39" project-e lateris in position on the surface of-"the material" to;

V be out} substantially as sh'own inl ignre Lf .When the device is in: cuttingii'position the side rollers are on different-pieces oflinollenmj v I: ;and the knife blade: 33 is arranged'wi'th; the- V e i point 35f thereofsubstantially-flush with the" bottom edge 'ofthe' loW'er pi'e'ce of linoleum: The' guideylugs 23' and'23 abut against they edge of-"the material indicated b'yithe numeral '7 40 the. pressure rollers 25: and 25-fengagel the flnpper';surfaceiof this piece of material 2 directlyin frontand inthelrear ofthecutting I the'de handlesand exerts clownvvardfand forward thedeviee. TheV -slot 38 also holdsthe blade 'thei blade to out along a linesubstantially parallel ;vvith:tl1'e edge. The pressure roller 25 servesto keep the two'pieces of material Q from rising out of'its position. v, I

blade vvill be rigi dly.

same,- sedan varionsgch'anges in" the shape;

.1 i A 1 d vice of g 1 surface :to'be eutgisaidmeansineluding? rollers the same path as said'cnttingniember;"

comprising a frame, a; vertieaL uttin m m v we by v 1ber, and'ineansgfor]gnidingjsaidzframe in: V V V I eiha's been placedin th'e-po-f its-inoviement over said1surfaceLg?,- I sition" j List desoribed' theoperator-"grasps $1 6 A p e .ooinpjji ising a nnovable gfframe,- a threaded I ressure/to force the entting' bladethrough the'materialf Thejblade 33-is held in vertical positionivvithin 'thefslot 28- 'a's will bemndew stood. Theijeross frame me'mber, 12 having I the opening 3,8finto Whichaportion of the i blade extends, -'"assists in retaining theblade in vertical position-during the op'er'ation of e, a m securely and prevents any twisting of the;

knife; horizontally Thelljugs 23' ides bear i against the edge 'fofthe material? and, enable.

, pressedf tightly} against. each other" and; s 7 it 1 against" whatever base the material nay be resting; upon; whereby the cutting by the e a knife blade immediately following'the roller' I can-be aocomplishedmore easily; The roller f p v 25; also f prevents the top layer: ofrmaterial 7 i from bulging1and the rear r'oller 25 prevents) the cut-oifstr i-p o f theftoplayenoffmat'erial It Wlll' l)e apparent. that by the: provision:-.

of "the nutsl O a' nd'31 theknifeholderr 2 6 is; I

adj ustabl'e vertically withinithefopening {'16 v whereby the device maybe jnsedi in; cutting f material of various'thicknesses; Thenut137.

threads dfo-vvn into' engagementflvv ith th flat j upper ed'gefi lf of'the blade and its lowermost e position isiwell-beneath the upperext'remity T of the slot-28 thus serving ft'o' prevent acer;-

dental displacement'of' the blade, The; rearfl at? y -rollersZO'are-knurled to :pern itithem' :td better' engage-the snrface -of the material "to; be cut.- r -The' device isisimplein constructionyinex pensive,easilyfassembledflan with- 'proper' 1; care will last indefinitely Y Itis to be understood ithatx e I e invention lI'BIGW-ith I shown and? described is" to.) be i taken 'as a preferred exam le; of: thei U size, and-arrangement ofpartsmayibe mades -f ithout departing frointhe spirit o'fithe in-si Comprising? a frame; 1 removable cutting? niei'nberaar'ranged on: sa d; frame; and means fo e abling said frame to, be moved over associated' with saidfframei meatlessens:7 1i; pressure roller; arranged for? movement in; 1

2. All device is of the character: described:

ber arranged (insaid frame', rollers. f0r; eniabling said frame -to be inoved over asufiece to be out, pressure rollersarranged for movement in'thesamepath as" j outt'in'g mem- I 3; ki'devi efi ofwhe.ch et y described.

member rd'ependin g from.isaid frame'andaprovidedavvithga:slot therein;Ja JCIittingmember g arranged nqsaid 10$;emeans' iq r;securing; i

said cutting member in said slot in a vertical position, and additional means carried by said frame for assisting said first named means in retaining said cutting member in a vertical position and for preventing twisting of said cutting member.

4. A device of the character described comprising a movable frame, a threaded member secured in and depending from said frame and being provided with a vertical slot therein, inwardly extending shoulders arranged on said threaded member and projecting into said slot, the sides of said slot being tapered below said shoulders, a cutting member arranged in said slot and provided with tapered sides adapted to engage the tapered sides of said slot, means for retaining said cutting member in a vertical position, and means for preventing twisting of said cutting member.

5. A device of the character described comprising a movable frame, a threaded member depending from said frame and provided with a slot therein, said member being slightly resilient adjacent said slot, a cutting member arranged in said slot, the resiliency of said threaded member serving to hold said cutting member in said slot in a vertical position, means threaded on said threaded member and adapted to engage said cutting member for assisting in securing the latter in vertical position, and means carried by said frame for preventing twisting of said cutting member.

6. A device of the character described comprising a movable frame provided with an elongated opening therein, a threaded member provided with flattened portions adapted to be received in said opening, means for adjustably securing said member in said opening, and a vertically arranged cutting member carried by said threaded member.

7. A device of the character described comprising a movable frame provided with '1' an elongated opening therein, a threaded member provided with flattened portions adapted to be received in said opening, means for adjustably securing said member in said opening, said threaded member being also provided with a vertical slot therein, a cutting member arranged in said slot, means for securing said cutting member in a vertical position in said slot, and additional means for preventing twisting of said cutting member.

threaded member being further provided with a vertical slot therein, inwardly extending shoulders arranged on said threaded member and projecting into said slot, the sides of said slot below said shoulders being tapered, a cutting member arranged in said slot and provided with tapering sides adapted to engage the tapering sides of said slot, a nut arranged on said threaded member and adapted to secure said cutting member in vertical position in said slot, and a cross bar carried by said frame and provided with a groove therein, a portion of said cutting member being adapted to extend into said groove to prevent twisting of said cutting member from its vertical position.

In testimony whereof I affix my signature.

EDWIN T. SCHMIDT. 

